_luckily_ i get that kind of stuff all the time. at least twice a month maybe? sometimes more often than that. (unfortunately i've never had the specific experience that you had). and most usually when practicing directly with sensei. the dojo i practice in is a USAF dojo.

maybe im just a weirdo, hmmm

occasionally it's a kind of thing that i dont even realize happened until later on in the day. sometimes there are big things that i notice right away. and yeah, sometimes a senior person will say they are going to do something specific and then would feel it right there, i guess in a way similar to what you felt. Jim Baker Sensei comes to mind...

i have found that people are already able to do these things. i mean beginning students. even though they may not know it yet, they move with ki during their techniques every now and then. when i try and stay sensitive to it sometimes i can pick out something that they're doing that feels funky but in a good way.